1) If you bet 0,70, then you are left 0,95 $ and I think that is pot commited.
I would bet 0,60 and fold to the re-raise
2) If you want to get away this hand then I would bet again 0,60. If you bet 0,70 then you are pot commited and you should go all-in on the flop directly for fold equity.
Contibets are always very hard to make. You should decide if you want to get away that hand or you put all your money in anyway. I think that the second case is better go all-in directly, because then they might fold their lower pair or draw.